Added RegExp

src/com/imegumii/RegExp.java

@@ -0,0 +1,74 @@
+package com.imegumii;
+
+import java.util.Comparator;
+
+/**
+ * Created by kenny on 2-5-2017.
+ */
+public class RegExp {
+
+    public enum Operator { PLUS, STER, OF, PUNT, EEN}
+
+    Operator operator;
+    String characters;
+
+    RegExp links;
+    RegExp rechts;
+
+    static final Comparator<String> vergelijkDmvLengte = (s1, s2) -> {
+            if (s1.length() == s2.length())
+            {return s1.compareTo(s2);}
+            else
+            {return s1.length() - s2.length();}
+        };
+
+    public RegExp()
+    {
+        operator = Operator.EEN;
+        characters = "";
+        links = null;
+        rechts = null;
+    }
+
+    public RegExp(String chars){
+        operator = Operator.EEN;
+        characters = chars;
+        links = null;
+        rechts = null;
+    }
+
+    public RegExp plus()
+    {
+        RegExp res = new RegExp();
+        res.operator = Operator.PLUS;
+        res.links = this;
+        return res;
+    }
+
+    public RegExp ster()
+    {
+        RegExp res = new RegExp();
+        res.operator = Operator.STER;
+        res.links = this;
+        return res;
+    }
+
+    public RegExp of(RegExp other)
+    {
+        RegExp res = new RegExp();
+        res.operator = Operator.OF;
+        res.links = this;
+        res.rechts = other;
+        return res;
+    }
+
+    public RegExp punt(RegExp other)
+    {
+        RegExp res = new RegExp();
+        res.operator = Operator.PUNT;
+        res.links = this;
+        res.rechts = other;
+        return res;
+    }
+
+}